A rapid method for the development of weather-resistant vinyl compounds was proposed based on an established correlation of accelerated vs. actual weathering performance. The ingredients of a typical vinyl compound were examined in the accelerated test. Improvements in actual weather resistance were predicted by proper selection of the resin, stabilizer, fillers and pigments. Plasticizer choice was based on compatibility, oxidation stability, and volatility tests. A list of stable colorants suitable for use in outdoor applications is given. Combining the best of these ingredients as predicted by the accelerated test resulted in a compound vastly improved in actual weather resistance. Author
Annual Wire and Cable Symposium (4th), Asbury Park, N. J., December 7, 1955.